grrr....why must you persist and asking these foolish questions.
yes he was, read the books and maybe you shall find out a little more than the common synopis on the back cover of the dvds.
Sauron devised the ONE RING to rule all the rings, since he could rule all the other rings he DID become the lord of all the rings.
Discos - sorry dude, this has sooo been discussed before.